My solution to this minor irritation in life
is to redesign them in such a way as to
have the same tapering contours as that
of
the bow fronts of ships. They could then
glide
past each other, or gently nose through
narrow gaps between people, their
wedged profiles gradually creating
sufficient space, without resulting
turbulence.

The nautical theme could be extended by
laying out the store in the form of
famous shipping lanes, for
navigational purposes.

Individual trolleys could be styled after
different types of vessels, with the more
speedy, streamlined ones used for a
quick
visit, and the heavy, bulk carriers
deployed
for the big family on a large weekly shop.